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EP1753635B1 - Vorrichtung und verfahren zur steuerung des raddrehmoments eines fahrzeuges - Google Patents

Vorrichtung und verfahren zur steuerung des raddrehmoments eines fahrzeuges Download PDF

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Publication number
EP1753635B1
EP1753635B1 EP05766710A EP05766710A EP1753635B1 EP 1753635 B1 EP1753635 B1 EP 1753635B1 EP 05766710 A EP05766710 A EP 05766710A EP 05766710 A EP05766710 A EP 05766710A EP 1753635 B1 EP1753635 B1 EP 1753635B1
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EP
European Patent Office
Prior art keywords
speed
power train
accelerator pedal
limitation
depression
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05766710A
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English (en)
French (fr)
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EP1753635B8 (de
EP1753635A1 (de
Inventor
Frédéric Roudeau
Jean Bretheau
Vincent Vermuse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault Technocentre
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Publication of EP1753635B1 publication Critical patent/EP1753635B1/de
Publication of EP1753635B8 publication Critical patent/EP1753635B8/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1497—With detection of the mechanical response of the engine
    • F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2409—Addressing techniques specially adapted therefor
    • F02D41/2422—Selective use of one or more tables

Definitions

  • the present invention relates to a control device of a powertrain unit capable of delivering torque setpoint signals to be applied to the motor vehicle wheels, and a related method.
  • the invention more particularly relates to a control device of a powertrain, which can be adapted to any type of motor vehicle and to control the variations of the engine speed of said group to improve the acoustics felt by the driver and the passengers of the motor vehicle.
  • the applicant has developed a device for controlling the operating point of a powertrain of the motor vehicle, described in document FR-A-2,827,339 .
  • the control carried out by this device is a torque control applied to the wheels of the motor vehicle.
  • the value of the torque to be applied to the wheels of the motor vehicle is calculated directly at the wheels of the motor vehicle.
  • Such a device is equipped with a module for interpreting the driver's will, said module IVC, comprising in particular a generator for generating a signal representative of a limitation of variation of the speed of the powertrain group capable of reducing variations. acoustics of the powertrain that the driver is likely to hear.
  • Said signal is transmitted to an optimization unit of the power unit for controlling the torque to be applied to the wheels of the vehicle, the optimization block for determining an operating point in an optimal operating range of the powertrain on the basis of driving pleasure constraint.
  • the determination of the signal representative of a limitation of the speed of the powertrain group capable of reducing the acoustically inconvenient variations of the powertrain unit is carried out according to the degree of activity of the driver and the speed of the motor vehicle.
  • Such a device able to improve the acoustics felt by the people within the cabin, has the drawback of not allowing to correctly take into account the torque demand variations to be applied to the wheels, the signal being determined mainly by the speed of the motor vehicle.
  • the object of the present invention is therefore to overcome this drawback and to provide a device for controlling a powertrain that can take into account, in a particularly precise manner, the variations in torque demand, and therefore indirectly the speed of the power unit. thruster, making it possible to determine the limitations of the adapted powertrain group.
  • the means for generating the signal representative of a limitation of variation of the speed of the engine integrated in the powertrain is input fed by parameters representative of the characteristics of the motor vehicle and parameters representative of the will of the driver.
  • the torque instruction to be applied to the wheels is calculated directly at the wheels of the motor vehicle.
  • the device With such a device, it thus becomes possible to provide a device for determining the operating range of the powertrain for driving approval directly adapted to the will of the driver issued, including through the accelerator pedal.
  • the device thus makes it possible to have an acoustics of the powertrain unit dependent not only on the speed of the motor vehicle, but also on the will of the driver.
  • the device makes it possible to take into account the variations in the position of the accelerator pedal in order to generate speed limits for the engine of the powertrain, in addition to the acceleration or the deceleration of the vehicle.
  • the parameters representative of the characteristics of the motor vehicle may comprise a parameter representative of the estimated or measured degree of activity of the driver Acond, and a parameter representative of the speed of the motor vehicle Vveh.
  • the parameters representative of the driver's will include parameters representative of the position of the Pedacc accelerator pedal and the parameters representative of the position of the Ped arthritis brake pedal.
  • Parameters representative of the will of the driver further include a parameter representative of the gradient of the position of the accelerator Pedacc_grd pedal .
  • the parameter representing the gradient of the position of the accelerator pedal Pedacc_grd has been filtered by a filtering means and / or timed by a delaying means before the generation means are fed by said parameter Pedacc_grd .
  • the invention also relates to a method for controlling a motor-driven power unit for a motor vehicle capable of delivering torque command signals to be applied to the wheels of the motor vehicle, in which a signal representative of a limitation of the speed of the motor vehicle is generated.
  • a heat engine integrated in the power unit capable of reducing the acoustically annoying variations of said group an operating point of the power unit is determined in an optimal operating range of the power unit according to the signal representative of speed limitation.
  • This signal is generated representative of a limitation of variation of the speed of the integrated heat engine.
  • powertrain group according to input parameters representative of the characteristics of the motor vehicle and parameters representative of the will of the driver.
  • a limitation of the speed of the heat engine integrated in the power unit is generated as a function of the depression of the Pedacc accelerator pedal .
  • Said limitation may also be generated as a function of the depression of the vehicle brake and / or according to the gradient of the position of the accelerator pedal Pacc_grd.
  • a control device comprising a means 1 for interpreting the driver's will, a means 2 for determining an operating point in an optimum operating range of a powertrain 3 and an embodiment 4 the determined operating point.
  • the means 1 is connected to three input modules 5, 6 and 7, respectively via connections 8, 9 and 10, able to produce a signal representative of a quantity measured by sensors (not shown) mounted on the vehicle.
  • the module 5 provides the characteristics of the vehicle, in particular the vehicle behavior profiles programmed by the manufacturer to characterize the behavior of the vehicle delivered to a customer.
  • the module 6 is capable of developing data by providing the interface between the human driver and the rest of the motor vehicle according to the technique of man / machine interfaces.
  • the module 7 is able to develop signals concerning the environment of the motor vehicle. These make it possible to take into account the state of the vehicle and its location in the environment, such as the speed of the motor vehicle, the condition of the roadway or the weather conditions.
  • the value of the parameters and the state of the variables of the input data transmitted by these three modules can be stored in a common memory for each element of the device (not shown).
  • the means 1 comprises a torque setpoint generator 11 to be applied to the wheels comprising a static component, called the static torque Cs , and a torque setpoint generator 12 to be applied to the wheels comprising a dynamic component, called the dynamic torque Cd.
  • Such generators torque setpoint can be for example generators as described in the application FR-A-2,827,339 .
  • the means 1 also comprises a generator 13 for limiting the speed variation of the heat engine of the power unit capable of generating two limiting setpoint signals 21, 22, called the positive limit of the speed lim_var_rpm_pos, in order to limit the speed variations towards the direction of the increase, and limit of negative regime lim_var_rpm_neg to limit the variations of the engine speed in the direction of the reduction.
  • the speed variation limitation defines the variation of the engine speed during a determined time interval.
  • the generation means 13 receives as input data representative of the will of the driver as well as data representative of the characteristics of the motor vehicle.
  • the data representative of the gradient of the accelerator pedal can advantageously be filtered by a filtering means 20, such as a filter, before being transmitted by the connection 15b to the generating means 13 in order to eliminate any unwanted noise. It is also conceivable to provide a timing means (not shown) capable of storing a maximum value of the gradient of the position of the pedal during a given period of time to transmit it to the generation means 13.
  • the generating means 13 makes it possible to determine the speed variation limitation in order to improve the acoustics within the passenger compartment of the motor vehicle, by transmitting the setpoint signals for limiting variations in the speed of the vehicle. speed towards the direction of the increase lim_var_rpm_pos and limiting the speed towards the direction of the reduction lim_var_rpm_neg , respectively by the connections 21 and 22, by means of determination 2 of the operating point of the power unit.
  • the organization chart shown on the figure 3 shows the various tests of analysis and comparison made on the data transmitted by the connections 14 to 19 ( figure 2 ). These tests are carried out by different comparison means, for example comparators, according to the following process.
  • a first step 23 consists in determining whether the accelerator pedal is depressed beyond a first threshold, here beyond the hard point of the so-called kick accelerator. If the depression of the accelerator pedal PedAcc is greater than the depression corresponding to the hard point kick then the generation means 13 chooses a first mode 24 in which the variable lim_var_rpm_pos takes the calibrated value Ni_grd_max and the variable lim_var_rpm_neg takes the value calibrated Ni_grd_min, where Ni represents a speed setpoint of the engine integrated in the powertrain 3 ( figure 1 ), predetermined in order to obtain a limitation of the operating point to achieve the maximum performance of said powertrain 3 while having improved acoustics for people inside the passenger compartment of the motor vehicle.
  • the generating means 13 goes to step 25 and checks whether the depression of the accelerator pedal Pedacc is greater than one. seuil_PedaccF second threshold corresponding to a depression of the accelerator pedal close to 100%, being for example 95%. If the depression of the acceleration pedal of the motor vehicle is strictly greater than the predetermined threshold of depression of the accelerator pedal ( Pedacc> threshold_PedaccF ) then the generation means 13 goes to a second mode 26 in which the variable lim_var_rpm_pos is calculated from a calibratable mapping p_PedaccF and lim_var_rpm_neg variable is calculated from a calibratable mapping n_PedaccF.
  • the seuil_PedaccF generation means 13 proceeds to step 27 and checks whether the depression of the Pedacc accelerator pedal is less than a seuil_PedaccL third threshold corresponding to a depression of the accelerator pedal close to 0%, being for example 10%.
  • the generation means 13 goes to a third mode 28 in which the variable lim_var_rpm_pos is calculated from a calibratable mapping p_PedaccL and lim_var_rpm_neg variable is calculated from a calibratable mapping n_PedaccL. These two maps depend on the activity information of the driver Acond and the speed of the motor vehicle Vveh.
  • the generation means 13 goes to step 29 and checks whether the filtered gradient of the depression of the Pedacc_grd_fil accelerator pedal is greater than a fourth.
  • PeduccFD threshold corresponding to a rapid depression of the accelerator pedal without however the position of the accelerator pedal reaches the second threshold threshold _ PedAccF .
  • the generation means 13 proceeds to a fourth embodiment 30 wherein the variable is lim_var_rpm_pos calculated from a calibratable mapping p_PedaccFD and lim_var_rpm_neg variable is calculated from a calibratable mapping n_PedaccFD. These two maps depend on the activity information of the driver Acond and the speed of the motor vehicle Vveh.
  • step 31 If the gradient of the position of the accelerator pedal is less than the fourth threshold seuil_PedaccFD then the generation means 13 proceeds to step 31 and checks whether the filtered gradient of depression of the accelerator pedal is less than Pedacc_grd_fil fifth seuil_PedaccLD threshold corresponding to a quick survey of the accelerator pedal without reaching the second threshold seuil_PedaccL.
  • the generation means 13 passes to a fifth mode 32 in which the variable lim_var_rpm_pos is calculated from a calibrable map p_PedaccLD and the variable lim_var_rpm_neg is calculated from a calibrable map n_PedaccLD. These two maps depend on the activity information of the driver Acond and the speed of the motor vehicle Vveh.
  • the generation means 13 goes to a sixth mode 33 in which the variable lim_var_rpm_pos is calculated from a map calibrable p_PedaccS and the variable lim_var_rpm_neg is calculated from a calibrated map n_PedaccS. These two maps depends on the information of the activity Acond driver and the speed of the vehicle Vveh, and correspond to an average position of the pedal between the second threshold and the third seuil_PedaccF seuil_PedaccL threshold.
  • the generating means 13 thus makes it possible to transmit a limitation of the variation of the speed of the heat engine by means of determination 2 in order to improve the acoustics within the passenger compartment of the motor vehicle, by transmitting the control signals of limitation of the variations.
  • the speed of the engine in the direction of the increase Iim_var_rpm_pos and limitation of the speed in the direction of the reduction lim_var_rpm_neg by means of determination 2.
  • Said variable limiting signals thus take into account the variations in the torque demand generated at from the Pedacc accelerator pedal.
  • the determining means 2 also receives a static torque setpoint Cs of the generator 11 via the connection 34 and a static torque setpoint Cd of the generator 12 via the connection 35.
  • the means 2 for determining the operating point of the power unit 3 thus receives four control signals lim_var_rpm_pos, lim_var_rpm_neg, Cs and Cd.
  • the determination means 2 thus allows the independent parameterization of the modules 36, 37 and 38 which constitute it, the module 36 delivering a torque signal to the wheel C , the module 37 a battery power signal Pbat, and the module 38 a motor speed control signal N.
  • Said signals are transmitted, respectively via the connections 39, 40 and 41, to the module 4 for producing the operating point of the power unit 3 for controlling the control members of the power unit 3 by means of of the connection 42 and the drive wheels 43 by the connection 44 in a manner similar to the patent application FR-A-2,827,339 in the name of the plaintiff.
  • the present invention thus makes it possible to carry out a control applied to the wheel of the operating point of the power unit making it possible to generate speed limit setpoints for said engine integrated in the powertrain group that are directly dependent on the state of the vehicle but also adapted to the the driver's will, including through the accelerator pedal, for the purpose of obtaining improved driving pleasure.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)

Claims (8)

  1. Steuervorrichtung eines Kraftfahrzeug-Antriebsaggregats, die in der Lage ist, Sollwertsignale des an die Räder des Kraftfahrzeugs anzuwendenden Drehmoments zu liefern, mit einer Einrichtung (1) zur Erzeugung eines für eine Drehzahländerungsbegrenzung des in das Antriebsaggregat integrierten Wärmekraftmotors repräsentativen Signals, das in der Lage ist, die aus akustischer Sicht störenden Veränderungen des Aggregats zu reduzieren, und mit einer Einrichtung (2) zur Bestimmung eines Betriebspunkts des Antriebsaggregats in einem optimalen Betriebsbereich in Abhängigkeit von dem für eine Drehzahlbegrenzung repräsentativen Signal, wobei die Einrichtung (1) zur Erzeugung des für eine Drehzahländerungsbegrenzung des in das Antriebsaggregat integrierten Wärmekraftmotors repräsentativen Signals am Eingang mit für Merkmale des Kraftfahrzeugs repräsentativen Parametern und mit für den Willen des Fahrers repräsentativen Parametern gespeist wird, die für die Position des Gaspedals (Pedacc) repräsentative Parameter, für die Position des Bremspedals (Pedfrein) repräsentative Parameter und einen für den Gradient der Position des Gaspedals (Pedacc_grd) repräsentativen Parameter enthalten, dadurch gekennzeichnet, dass die Erzeugungseinrichtung (1) zwei Betriebsgrenzwerte des Antriebsaggregats (lim_var_rpm_pos, lim_var_rpm_neg) produziert, die variabel sind und von der Position des Gaspedals und dem Gradient der Position des Pedals bezüglich vorbestimmter Schwellwerte abhängen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die für die Merkmale des Kraftfahrzeugs repräsentativen Parameter einen für den geschätzten oder gemessenen Aktivitätsgrad des Fahrers repräsentativen Parameter (Acond) und einen für die Geschwindigkeit des Kraftfahrzeugs repräsentativen Parameter enthalten (Vveh).
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der für den Gradient der Position des Gaspedals (Pedacc_grd) repräsentative Parameter vor der Speisung der Erzeugungseinrichtung (1) mit dem Parameter (Pedacc_grd) von einer Filtereinrichtung gefiltert wurde.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Betriebsgrenzwerte (lim_var_rpm_pos, lim_var_rpm_neg) durch die Beziehungen: lim_var_rpm_pos = F ⁢ 1 Acond , Vveh
    Figure imgb0007
     lim_var_rpm_neg = F ⁢ 2 Acond , Vveh
    Figure imgb0008
    definiert werden, in denen die variablen Funktionen F1 und F2 von der Position des Gaspedals sowie vom Gradient der Position des Pedals abhängen, wobei die Funktionen von Interpolationstabellen bestimmt werden, deren Parameter definitiv bei der Entwicklung des Fahrzeugs bestimmt wurden.
  5. Verfahren zur Steuerung eines Antriebsaggregats eines Kraftfahrzeugs, das in der Lage ist, Sollwerte des an die Räder des Kraftfahrzeugs anzuwendenden Drehmoments zu liefern, bei dem ein für eine Drehzahlbegrenzung des in das Antriebsaggregat integrierten Wärmekraftmotors repräsentatives Signal erzeugt wird, das in der Lage ist, die aus akustischer Sicht störenden Veränderungen des Aggregats zu reduzieren, ein Betriebspunkt des Antriebsaggregats in einem optimalen Betriebsbereich in Abhängigkeit von dem für eine Drehzahlbegrenzung repräsentativen Signal bestimmt wird, das für eine Drehzahländerungsbegrenzung des in das Antriebsaggregat integrierten Wärmekraftmotors repräsentative Signal in Abhängigkeit von für die Merkmale des Kraftfahrzeugs repräsentativen Parametern und von den für den Willen des Fahrers repräsentativen Parametern erzeugt wird, dadurch gekennzeichnet, dass die Drehzahlbegrenzung des Wärmekraftmotors mindestens einen der folgenden Schritte aufweist:
    - Vergleich des Eindrückens des Gaspedals mit einem ersten vorbestimmten Positionsschwellwert, der einem Zustand des Eindrückens über den Druckpunkt des Gaspedals hinaus entspricht,
    - Vergleich des Eindrückens des Gaspedals mit einem zweiten vorbestimmten Positionsschwellwert, der einem Zustand des Eindrückens des Pedals unter dem ersten Schwellwert entspricht,
    - Vergleich des Eindrückens des Gaspedals mit einem dritten vorbestimmten Positionsschwellwert, der einem Zustand des Eindrückens des Pedals unter dem zweiten Schwellwert entspricht,
    - Vergleich des Eindrückgradienten des Gaspedals mit einem vierten vorbestimmten Positionsänderungsschwellwert, der einem schnellen Eindrücken des Pedals entspricht,
    - Vergleich des Eindrückgradienten des Gaspedals mit einem fünften Positionsänderungsschwellwert, der einem schnellen Anheben des Pedals entspricht,
    wobei jeder Schritt eine Drehzahlbegrenzung des Wärmekraftmotors zwischen Betriebsgrenzwerten bestimmt oder den folgenden Schritt gemäß dem Wert der Parameter erlaubt.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass eine Drehzahlbegrenzung des in das Antriebsaggregat integrierten Wärmekraftmotors in Abhängigkeit vom Eindrücken des Gaspedals (Pedacc) erzeugt wird.
  7. Verfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass eine Drehzahlbegrenzung des in das Antriebsaggregat integrierten Wärmekraftmotors in Abhängigkeit vom Eindrücken des Bremspedals (Pedfrein) erzeugt wird.
  8. Verfahren nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass eine Drehzahlbegrenzung des Antriebsaggregats in Abhängigkeit vom Gradient der Position des Gaspedals (Pedacc_grd) erzeugt wird.
EP05766710A 2004-05-28 2005-05-30 Vorrichtung und verfahren zur steuerung des raddrehmoments eines fahrzeuges Not-in-force EP1753635B8 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0405804A FR2870793B1 (fr) 2004-05-28 2004-05-28 Dispositif de commande d'un groupe moto-propulseur de vehicule automobile permettant le controle d'un couple applique aux roues du vehicule et procede associe
PCT/FR2005/050388 WO2005118327A1 (fr) 2004-05-28 2005-05-30 Dispositif et procede de controle du couple applique aux roues d’un vehicule

Publications (3)

Publication Number Publication Date
EP1753635A1 EP1753635A1 (de) 2007-02-21
EP1753635B1 true EP1753635B1 (de) 2008-07-02
EP1753635B8 EP1753635B8 (de) 2009-04-08

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US (1) US8112205B2 (de)
EP (1) EP1753635B8 (de)
JP (1) JP4480764B2 (de)
AT (1) ATE399672T1 (de)
DE (1) DE602005007890D1 (de)
ES (1) ES2314683T3 (de)
FR (1) FR2870793B1 (de)
WO (1) WO2005118327A1 (de)

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JP6387786B2 (ja) * 2014-10-22 2018-09-12 株式会社デンソー 超音波式物体検知装置

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Publication number Publication date
EP1753635B8 (de) 2009-04-08
US8112205B2 (en) 2012-02-07
EP1753635A1 (de) 2007-02-21
WO2005118327A1 (fr) 2005-12-15
DE602005007890D1 (de) 2008-08-14
US20070276571A1 (en) 2007-11-29
FR2870793A1 (fr) 2005-12-02
JP2008501090A (ja) 2008-01-17
ES2314683T3 (es) 2009-03-16
JP4480764B2 (ja) 2010-06-16
FR2870793B1 (fr) 2007-08-31
ATE399672T1 (de) 2008-07-15

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